1604531404131 has 48 divisors (see below), whose sum is σ = 2358232259328. Its totient is φ = 969500044800.

The previous prime is 1604531404043. The next prime is 1604531404153. The reversal of 1604531404131 is 1314041354061.

It is not a de Polignac number, because 1604531404131 - 2⁹ = 1604531403619 is a prime.

It is a super-2 number, since 2×1604531404131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1604531404092 and 1604531404101.

It is not an unprimeable number, because it can be changed into a prime (1604531404181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2343861 + ... + 2950041.

It is an arithmetic number, because the mean of its divisors is an integer number (49129838736).

Almost surely, 2^{1604531404131} is an apocalyptic number.

1604531404131 is a deficient number, since it is larger than the sum of its proper divisors (753700855197).

1604531404131 is a wasteful number, since it uses less digits than its factorization.

1604531404131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606332 (or 606315 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 1604531404131 its reverse (1314041354061), we get a palindrome (2918572758192).

The spelling of 1604531404131 in words is "one trillion, six hundred four billion, five hundred thirty-one million, four hundred four thousand, one hundred thirty-one".